Home / 378,231.96-521,963.74-208,472.60

Finding the Fourth Proportional to 378,231.96, 521,963.74 and 208,472.60

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Solution

The fourth proportional to 378,231.96, 521,963.74 and 208,472.60 is: 287,694.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,231.96 : 521,963.74 = 208,472.60 : x
  2. Step 2: Convert to fraction form
    378,231.96/521,963.74 = 208,472.60/x
  3. Step 3: Cross multiply
    378,231.96x = 521,963.74 × 208,472.60
  4. Step 4: Simplify right side
    378,231.96x = 108,815,137,983.52
  5. Step 5: Solve for x
    x = 108,815,137,983.52/378,231.96
  6. Step 6: Final answer
    x = 287,694.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.